Who doesn’t love a good riddle?! Using this lesson plan, your students will solve a puzzle while learning to read, write, and compare decimals to thousandths.

Which number doesn't belong? This lesson requires students to think critically as they determine which number is not a factor of a particular number. Teach it on its own or as support for the lesson Factors Over the Rainbow.

Students will explore how parentheses change the meaning of a number sentence. They will be challenged with a set of playing cards to make a certain number.

The number ten has lots of friends, and they often come in pairs! Your students will sing a song, enjoy a video, play a game, and work on matching number pairs that make ten!

Teach your preschoolers their home phone numbers, and reinforce the digits zero through nine! Learning phone numbers can also help your students if they have an emergency or get lost.

In this lesson, students will learn how to add a one-digit number to a two-digit number. This will help students build upon the skills needed for regrouping larger numbers.

Students will practice mental math and harness their discussion skills through addition problems of like mixed numbers. This lesson may be used on its own or as support for the lesson Adding Mixed Numbers Using the Decomposition Strategy.

Children often wonder if algorithms are practical. Using this lesson plan, your students will see how the standard algorithm for adding mixed numbers brings life to real world real-world situations.

In this lesson, students must become detectives to solve for the missing number in each subtraction problem. They will develop and use their powers of mathematical reasoning using number bonds to find differences.

Cakes, candles, and concepts! Celebrate one-to-one correspondence with this number and quantity party.

Give your students insight into what’s going on when you multiply a whole number and a fraction! Use this lesson plan to teach your students to illustrate products of whole numbers and fractions using number lines.

In this lesson, students will practice identifying and modeling equivalent fractions by using number lines.

Students will practice counting, number recognition, and matching numerals and quantities in this self-checking game.

Your students will learn to add unlike mixed numbers using tape diagrams.

In this lesson, students will construct their own number lines and bar models to find equivalent fractions.

Build a solid foundation in number sense with this lesson all about the friendly number 10! Students will count with both fingers and base-ten blocks. This lesson can be used alone or with the lesson plan Place Value Concentration.

Students will gain fluency with adding multiples of ten in this hands-on lesson that builds number sense.

In this fun literature and art infused lesson plan, students will learn how to use a hundreds chart when extending the number sequence to 100! Can be used as a stand alone or support lesson plan for the Number Jump lesson.

One million is a hard number for young children to grasp. This lesson will help students understand how large of a number one million is and what is represents.

Help students use two strategies that will help them figure out which three-digit number is greater than, less than, or equal to another three-digit number. Use on its own or with Let's Compare! Place Value Disks & Three-Digit Numbers.

Teach your students to use tape diagrams to solve equations involving whole numbers and fractions.

Teach your students to add mixed numbers and improper fractions with the same denominator using the counting up strategy with number lines.

Make math colorful! Teach your students to find the factors of a number using the factor rainbow strategy.

Help build your students' confidence in number recognition and one-to-one correspondence with their favorite plastic building pieces.

Help your students unscramble the numbers using their knowledge of place value up to thousands! In this lesson, students will be able to see how numbers within a larger number have different values.

Teach your students to use bar models and multiplication to find a fraction of a whole number.

Students sketch base-ten blocks in this lesson that builds both number sense and fluency adding to 20!

Art meets math in this lesson that builds number sense by having students write and illustrate counting books. Start with zero, and encourage students to be creative as they work their way to 20!

Use this lesson to review three-digit addition strategies including base-ten drawings, number lines, and the standard algorithm.

Make multiplying by powers of ten more accessible to your students by focusing on patterns in the number of zeros!